<?php

/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2019/8/22
 * Time: 19:03
 */
class array_diff
{

}
$array1 = array('OH','CA','NY','HI','CT');
$array2 = array('OH','CA','HI','NY','IA');
$array3 = array('TX','MD','NE','OH','HI');
$diff = array_diff($array1, $array2, $array3);
print_r($intersection);